Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9d6deaf1ecf6023…

MALICIOUS

PDF

76.5 KB Created: 2021-04-18 23:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 82e302ce3618f759fdbbc2d73d2a985a SHA-1: 207b5e8426d2d75d19ea7f82006891079a83ae86 SHA-256: a9d6deaf1ecf6023447740449535913e845535a4fe81f541683e1d588633e108
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://zajinet.ru/strik?utm_term=2+lb+pork+roast+crock+pot+cooking+time PDF link annotation
    • https://cdn.sqhk.co/wufotubi/w5ja4gh/88950390811.pdfIn PDF document text
    • https://cdn.sqhk.co/zosaremarebi/L4IicOx/quoda_code_editor_pro.pdfIn PDF document text
    • http://help-feedback-amzn3.xyz/paintings_for_sale_ebayjw34w.pdfIn PDF document text
    • http://pe50off.info/breville_grind_control_review18ynd.pdfIn PDF document text
    • http://baltika-trans.com/bewitched_theme_song_freekrd2h.pdfIn PDF document text
    • http://clubstore.info/51310506055ykupo.pdfIn PDF document text
    • http://physcoo.com/what_is_the_weight_limit_for_baby_car_seattvuot.pdfIn PDF document text
    • http://youla-24.cc/96978323602ohjto.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/nuguzutumoter.pdfIn PDF document text
    • http://strapslap.online/89601961502t8dx1.pdfIn PDF document text
    • http://madewithsunshine.com/frankenstein_1831_audiobookv7ct5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/adobe_photoshop_7._0_crack_filehippo.pdfIn PDF document text
    • http://jadivepijuga.myartsonline.com/paper_cup_making_machine_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/d_d_character_creation_guide_5e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b3dc511-d7b1-4bbc-9e0a-a8b243d0f3a0/hp_p2035_printer_driver_windows_7_32_bit_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0685d129-42ab-4a94-8903-b9a47ac2aae0/9992198375.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/the_secret_garden_movie_1949.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57e17f8a-821e-4429-997f-cff9acbbea8b/mr_coffee_12_cup_programmable_coffee_maker_how_to_use.pdfIn PDF document text
    • http://foxukekamusun.onlinewebshop.net/puwokituwubebeveb.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/kefuberavoxebakonuxot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3580e46c-124d-4bba-ace2-499045bc2720/how_to_remove_samsung_24_inch_monitor_stand.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98C 5496 bytes
SHA-256: b6e916f2866a6ab5c38310780f571f48c65551d80bf79cd78af4f4d580c0ded3
font_01_sfnt_off0000fc25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC25 11164 bytes
SHA-256: 29e53028d05cb026f570af5b186689fb32dbdaaf724cfed72c0c83b2848b69cf

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